forged flange flat die forging meeting iso9001 factory outletThe flange is a connecting part between two shafts, which is used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange.

technology:1.UT1.1UT according to GB/T13314-2008A after roughing machining2.Macrostructure3.Microstructure4.Test method

serial

item

sample qty

sample position

method

1

chemical composition

1

GB/T 20066

GB/T223,GB/T4336

2

air

1

end of ingot

GB/T223,GB/T20124,GB/T11261

3

macrostructure

1

as required

GB/T226,GB/T1299,GB/T1979

4

non-metallic inclusion

1

as required

GB/T10561

5

carbide banding,liquation

1

as required

GB/T18254

6

carbide reticulation

1

as required

GB/T1299

7

spheroidized structure

1

as required

GB/T1299

8

hardness

2pcs for 1 furance

body and neck of roll

GB/T231.1

9

UT

every piece

100%

GB/T13314

10

size

every piece

100%

measure

11

surface

every piece

as required

visualization

Chemical Composition(m%)

Grade

C

Si

Mn

Cr

Mo

P

S

15Cr2Mo

0.12~018

0.17~0.37

0.40~0.70

2.30~2.60

0.40~0.55

≤0.009

≤0.009

21CrMo10

0.16~0.23

0.20~0.40

0.20~0.40

2.20~2.60

0.30~0.50

≤0.01

≤0.01

30CrMo

0.23~0.30

0.17~0.37

0.40~0.70

0.80~1.10

0.15~0.25

≤0.009

≤0.009

The factoryOur company is focusing on forgings for oil & gas industries.We have rich production experience and full technology on this industry.The products including gate valve, valve box, integral union riser, Fracturing head, tubing head, casting head, cross body, stabilizer, BOP...The products have pass API Q1, all production process follow the Q1's request.Our company has whole sets of QC equipment, which will ensure after many times QC, the products will be 100% good.Our goods has exported to Southeast Asia, Middle East and USA, and win the customers' high accept.Our company will try our best to develop to a very professional, high quality, and fast lead time forging manufacturer in China.

Heating furnace, forging ability& machining ability

MATERIAL

SERIAL NO.

MATERIAL

YIELD

TENSILE

V-IMPACT (ºF)

HARDNESS(HBW)

LOW ALLOY STEELS

1

AISI 4130

60K-105K

85K-120K

-76

187-237

2

AISI 4140

80K-130K

100K-145K

-20

217-352

3

4145H(MOD)

115K

140K

-20

285-341

4

AISI 4340

105K-150K

120K-170K

-20

262-429

5

AISI 8630

85-150K

105K-165K

-76

217-388

6

25CrNiMo

75k

95k

-20

210-234

Not only this, we also could produce forged parts according to the customers' request.

The whole companyProduct showcaseLAIWU FORGING CO., LTD offers open die forging or flat die forging, forged flange of and other designed forgings. Our company is a successful manufacturer and supplier, we devoted ourselves to oil and gas industries, wind energy industries, machinery industries , iron and steel industries and so on for many years. We will provide excellent service and competitive price for you, we are expecting become your long-term partner in China. Our typical customer includes SMS Group, GE, Siemens, Danieli and JIER MACHINE-TOOL GROUP CO.,LTD, VOITH group, and other big steel groups. The flange is a connecting part between two shafts, which is used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange.The certificatesOur company has passed the ISO9001, ISO14001 and OHSAS18001 certificates.We also get API Q1, ISO 29001 and pressure vessel certificate.The products have won high business integrity and recognition from our clients and the government.We have advanced laboratory, which could make all kinds of test according to customers' request, such as UT test, Material assay, Metallography test, Rigidity test, and Physical properties test.First-class technicians' managements, employees and QC system will provide you excellent quality and service.